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<html lang="zh">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        h3~p{
            color: rebeccapurple;
        }
    </style>
</head>
<body>
    <h3>你好</h3>
    <p>非常好</p>
    <p>好的很</p>
    <h4>是吗</h4>
</body>
</html>